ITEM NAME:9pcs Steel Guitar Bridge Saddle Tremolo Knob Adjustment Allen Key Wrench Product Description Description: Features: 1. 1.5mm electric guitar single shake, small double shake, electric guitar electric bass fixed bridge code fine-tuning screw is commonly used in this specification. (Not all, individual foreign piano may be useful for other models) 2. 2.0mm small hexagonal screw for volume knob. 3. 2.5mm hexagonal screw for fixed string code of double rocker bridge. 4. 3.0mm is mostly used for double rocker lock and double rocker bridge chord code compression chord length screw. 5. 4.0mm is mostly used for neck regulation. 6. 5.0mm less used for neck regulation. 7. 1/20 inch (about 1.27mm) for some Nissan Fanta single rocker bridge adjustments. 8. 1/8 inch (about 3.175mm) part of American Finda neck regulation. 9. 3/16 inches (about 4.76mm) for neck regulation of some Mexican Finda instruments. 10. Measuring method of hexagonal wrench size: Each hexagonal wrench has six sides, each two opposite sides are parallel, and the width of any two parallel opposite sides is the size of the wrench. Specifications: Material: Steel Color: Black Maximum product size: 65x25x5mm/2.6*1.0*0.2in Suit net weight : 53g Scope of application: regulation of various parts of electric guitar electric bass. Note: 1. Please allow 1-3cm measuring deviation due to manual measurement. 2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Included: 9pcs x Guitar Wrench.Included: 9pcs x Guitar Wrench. 1.5mm electric guitar single shake, small double shake, electric guitar electric bass fixed bridge code fine-tuning screw is commonly used in this specification. (Not all, individual foreign piano may be useful for other models).